Horizon

Horizon

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

On TV

All upcoming (2 new and 9 repeats)

OCD: A Monster in my Mind

If you or someone you know have been affected by the issues raised in OCD: A Monster in my Mind, there are organisations that may be able to help.

View a list of groups offering information and support.

Spot the International Space Station

Spot the International Space Station

See the ISS with the naked-eye from where you live as it races around the Earth every 90 minutes.

Horizon archive and interactive ebook

Horizon archive and interactive ebook
Celebrate over 50 years of Horizon with a collection of archive episodes and free interactive ebook downloads.

Are we all “a little bit” OCD?

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Discover the truth about the frequently misunderstood condition

Heart Attack Risk Calculator

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Find out what your risk of heart attack is using this online calculator.

Why isn’t breast cancer screening always reliable?

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How the NHS screening programme sometimes leads to false alarms and overdiagnosis.